RF Exposure

FCC ID: 2AUMQ-T7

RF Exposure Info

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FCCID_4485594

                        FCC ID : 2AUMQ-T7

1. RF EXPOSURE

1.1.The Requirement
         System operating under the provisions of this section shall be operated in a manner
         that ensures that the public is not exposed to radio frequency energy levels in excess
         of the Commission’s guidelines. See Section 15.247(b)(4) and Section 1.1307(b)(1)


1.2.Limit For Maximum Permissible Exposure (MPE)

     Limits for General Population/ Uncontrolled Exposure
                                                            Power Density      Averaging Time
    Frequency        Electric Field     Magnetic Field
                                                                (S)                2        2
      Range          Strength (E)        Strength (H)                            E ,H           or S
                                                                         2
      (MHz)             (V/m)               (A/m)            ( mW/cm )
                                                                                   (minutes)
     0.3-1.34             614                1.63               (100)*               30
     1.34-30             824/f               2.19/f            (180/f)*                30
      30-300              27.5               0.073                0.2                  30
    300-1500                                                    f/1500                 30
  1500-100,000                                                    1.0                  30

F = frequency in MHz,    * Plane-wave equivalent power density


1.3.MPE Calculation Method
      Predication of MPE limit at a given distance
      Equation from page 18 of OET Bulletin 65, Edition 97-01
      S=PG/4πR²

      Where: S=power density
              P=power input to antenna
             G=power gain of the antenna in the direction of interest relative to an isotropic
             radiator
              R=distance to the center of radiation of the antenna

       From the peak EUT RF output power, the minimum mobile separation distance,
       d=0.2m, as well as the gain of the antenna is 2dBi, the RF power density can be
       obtained.


   1.4.TEST RESULTS
         Maximum measured transmitter power

         For EDR, 8DPSK mode (Worse case)

   Test   Minimum       Output     Target   Target    Antenna      Power         Power
Frequency Separation    Power      power    power      Gain       Density       Density      Test
           Distance     (dBm)      (dBm)    (mW)     (Numeric)    At 20 cm       Limit      Results
(MHz)
            (cm)                                                 (mW/cm2)      (mW/cm2)
   2402     20.00        3.585      4±1     3.162      1.585       0.001         1.000       Pass

         For BLE (Worse case)

   Test   Minimum       Output     Target   Target    Antenna      Power         Power
Frequency Separation    Power      power    power      Gain       Density       Density      Test
           Distance     (dBm)      (dBm)    (mW)     (Numeric)    At 20 cm       Limit      Results
(MHz)
            (cm)                                                 (mW/cm2)      (mW/cm2)
   2402     20.00       -0.157      0±1     1.259      1.585       0.0004        1.000       Pass

         The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the
         uncontrolled RF Exposure.



   1.5.FCC Radiation Exposure Statement
         This equipment complies with FCC radiation exposure limits set forth for an
         uncontrolled environment. In order to avoid the possibility of exceeding the FCC radio
         frequency exposure limits, Human proximity to the antenna shall not be less than
         20cm(8 inches) during normal operation. Proposed RF exposure safety information to
         include in User’s Manual.



Document Created: 2019-10-14 17:28:09
Document Modified: 2019-10-14 17:28:09

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